def validate(number):
"""Check if the number provided is a valid VAT number. This checks the
length, formatting and check digit."""
number = compact(number)
if not isdigits(number[1:-1]):
raise InvalidFormat()
if len(number) != 9:
raise InvalidLength()
if number[0] in 'KLM':
# K: Spanish younger than 14 year old
# L: Spanish living outside Spain without DNI
# M: granted the tax to foreigners who have no NIE
# these use the old checkdigit algorithm (the DNI one)
if number[-1] != dni.calc_check_digit(number[1:-1]):
raise InvalidChecksum()
elif isdigits(number[0]):
# natural resident
dni.validate(number)
elif number[0] in 'XYZ':
# foreign natural person
nie.validate(number)
else:
# otherwise it has to be a valid CIF
cif.validate(number)
return number
def validate(number):
"""Checks to see if the number provided is a valid DNI number. This
checks the length, formatting and check digit."""
number = compact(number)
if not number[1:-1].isdigit():
raise InvalidFormat()
if len(number) != 9:
raise InvalidLength()
if number[0] in 'KLM':
# K: Spanish younger than 14 year old
# L: Spanish living outside Spain without DNI
# M: granted the tax to foreigners who have no NIE
# these use the old checkdigit algorithm (the DNI one)
if number[-1] != dni.calc_check_digit(number[1:-1]):
raise InvalidChecksum()
elif number[0] in 'ABCDEFGHJNPQRSUVW':
# there seems to be conflicting information on which organisation types
# should have which type of check digit (alphabetic or numeric) so
# we support either here
if number[-1] not in calc_check_digits(number[:-1]):
raise InvalidChecksum()
else:
# anything else is invalid
raise InvalidFormat()
return number
def validate(number):
"""Check if the number provided is a valid VAT number. This checks the
length, formatting and check digit."""
number = compact(number)
if not isdigits(number[1:-1]):
raise InvalidFormat()
if len(number) != 9:
raise InvalidLength()
if number[0] in 'KLM':
# K: Spanish younger than 14 year old
# L: Spanish living outside Spain without DNI
# M: granted the tax to foreigners who have no NIE
# these use the old checkdigit algorithm (the DNI one)
if number[-1] != dni.calc_check_digit(number[1:-1]):
raise InvalidChecksum()
elif isdigits(number[0]):
# natural resident
dni.validate(number)
elif number[0] in 'XYZ':
# foreign natural person
nie.validate(number)
else:
# otherwise it has to be a valid CIF
cif.validate(number)
return number
def validate(number):
"""Check if the number provided is a valid DNI number. This checks the
length, formatting and check digit."""
number = compact(number)
if not number[1:-1].isdigit():
raise InvalidFormat()
if len(number) != 9:
raise InvalidLength()
if number[0] in 'KLM':
# K: Spanish younger than 14 year old
# L: Spanish living outside Spain without DNI
# M: granted the tax to foreigners who have no NIE
# these use the old checkdigit algorithm (the DNI one)
if number[-1] != dni.calc_check_digit(number[1:-1]):
raise InvalidChecksum()
elif number[0] in 'ABCDEFGHJNPQRSUVW':
# there seems to be conflicting information on which organisation types
# should have which type of check digit (alphabetic or numeric) so
# we support either here
if number[-1] not in calc_check_digits(number[:-1]):
raise InvalidChecksum()
else:
# anything else is invalid
raise InvalidFormat()
return number
def calc_check_digit(number):
"""Calculate the check digit. The number passed should not have the
check digit included."""
# replace XYZ with 012
number = str('XYZ'.index(number[0])) + number[1:]
return dni.calc_check_digit(number)
def calc_check_digit(number):
"""Calculate the check digit. The number passed should not have the
check digit included."""
# replace XYZ with 012
number = str('XYZ'.index(number[0])) + number[1:]
return dni.calc_check_digit(number)
